Today, Bing announced an all new incentive to use the decision engine, by offering a cash reward to users who search: https://ssl.bing.com/rewards/signup/SEGetStarted
Bing Rewards is different from Bing Cashback, which was discontinued back in June.

Bing Rewards works by accumulating credits while you search using the Bing, and once you have earned enough credits, you can redeem your points for merchandise. Rewards include things like gift cards, electronics, music, games, Bing gear and more. You can see the Bing Rewards catalogue here: https://ssl.bing.com/rewards/redeem 
Bing Rewards will only ship within the 50 United States.

Bing Rewards is free to sign up, and users will receive 250 credits after registering. To get started, simply register for Bing Rewards, download the Bing Toolbar and login with your Windows Live ID. If you don't have a Windows Live ID, you can register for one here: https://accountservices.passport.net/ppnetworkhome.srf?vv=900&mkt=EN-US&lc=1033
The reward program only supports Internet Explorer 7 or higher on Windows XP SP2, Vista or Windows 7.

Users will be able to redeem their prizes at any time, and comes with free shipping for your items.

(NW)